At least he will sound different and look different, which could make the same shit feel different enough due to presentation alone. Which is better than what could have happened had Bettman stayed long enough to takeover as the perfect clone. A different personality over time can lead to some positive new directions, and there just isn't going to be the same attachment to policies where for stern there might have been feelings of a personal stake. If a need for a shift becomes apparent, it will be easier for Silver to accept that. But yeah, I wouldn't expect much more than shifts.